Element14 offers products leveraging BARBI Topology, enabling developers to take advantage of streamlined size and performance without compromising quality.

Element14 announced on the 7th that it has a 1kW analog bridgeless power factor correction (PFC) device utilizing the BARBI topology from ST Microelectronics and Wurth Elektronik.

BARBI is an innovative bridgeless power factor correction (PFC) topology that improves efficiency and power density. It eliminates the conventional four-diode bridge rectifier with two MOSFETs operating as synchronous rectifiers, further enhancing efficiency.

Even in bridgeless mode, it can be controlled by an analog controller, and complex transistors driving the circuit are unnecessary because the switches are driven only by LS gate drivers.

The EVL4986A-1KWBL demo board based on double boost topology (BARBI) can act as a bridgeless PFC pre-regulator that can provide 1 kW output (400 Vdc) and a wide input voltage range (90 Vac to 265 Vac).

Based on the new L4986A peak current mode CCM power factor correction controller, it can serve as a front-end converter up to 1 kW. This board is designed to meet IEC61000-3-2 and JEITA-MITI standards.

Looking at the main features, the input main range is 90-265 Vac at a frequency of 45-65 Hz, and the output voltage/load is 400 V/2.5 A.

It shows high efficiency of over 98% at 230Vac (maximum load), over 95.5% at 115Vac (maximum load), and over 94% at 10% to 100% of maximum load.

Low no-load mains power consumption is less than 250mW at 230Vac.

It is a main harmonic compliant with EN61000-3-2 Class-A and JEITA-MITI, Class-A standards, EN55022 Class-B EMI compliant, and EN62368 safety compliant.

The dimensions are 145x160mm and the height is 35mm. The PCB is double-sided, made of 70μm FR-4, and has a PTH/SMT mixed design.

Key components on the board include ST Microelectronics' L4986 CCM PFC controller, STW69N65M5 power MOSFET, STPSC12065 SiC diode, and PM8834 dual LS gate driver.

These components are suitable for a wide range of applications that require high efficiency, excellent power density, and outstanding performance.

Wurth Elektronik supplies the 750319521 PFC boost inductor, the WCAP-FTBE, WCAP-FTX2 film capacitors, and the WE-CMBNC common mode power line choke.

Its components are designed to meet the high efficiency requirements of power factor correction topologies and provide excellent EMC operation, self-healing characteristics and broadband suppression of common mode noise.

This board can be used in industrial and medical switch-mode power supplies, high-power LED lighting, consumer electronics, and server power supplies. The L4986 controller provides a low-component-count solution with high efficiency and low THD performance under all operating conditions, making it suitable for a wide range of power electronics applications.

The EVL4986-1KWBL demo board is available for purchase in the APAC region from element14.